AURELIO TECH MGS-0005-WZ Blue & Red 5FT R134a R12 R22 R502 HVAC A/C Diagnostic Manifold Gauge Refrigeration Charging System Professional AC diagnostic manifold gauge set for R134A, R12, R22 R502 refrigerants. 2500 PSI burst pressure, 500 PSI maximum working pressure, celsius degree unit. Include 3 color freon charging hose(5ft) for easily recognition, high (red) & low (blue) pressure. Complete diagnostic and service gauge set for use on air condition systems (home or automotive) Easy to read instrument panel. Solid brass connections.